A graph illustrates how kilowatt usage can be reduced by as much as 750 kW/day or 8%. According to the white paper, cost estimates of a typical 5.5-metre diameter mill indicate savings of up to $100,000 per year.

As explained in the white paper, there are hundreds of installations of Eriez trunnion magnets worldwide. This system for separating and removing balls, chips or scats in a typical ball/SAG mill operation replaces the dead weight of ball magnets with fresh ore. By effectively removing 80% or more of the worn or broken media, the trunnion magnet reduces power consumption from the mill drive and prevents expensive damage to other equipment, such as pumps and hydrocyclones.